a6a04d6387a4288965c5d223f9f6c88376a663dd484f4b54cf43aea4d25642da

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-10-2024 01:57

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General

Target

uninst.exe
Size

36KB
MD5

8231603dfd27787e73e66b67423e1ef6
SHA1

3842160a4306510b4d07b13678f3362b89653265
SHA256

2f026b566effcd5074f91cd51a1afa16ffebeaf38a3fab5bdbbff7720ac8cf65
SHA512

f8a2588f4fb6dfd53e3f267558e4aec27e6f0d29f358341ed5b537909a97202671e2d32238500faabdc64323103c4b2810bb4104ca1efdfb868c77748d2dd0e2
SSDEEP

768:je3PFaDVyOQgljLDKRJyM3BmsHzSB4us/wJJaJJRnjQmc2ELUK:i3cpyORJLuB4P4AJJkQmcLLH

Score

7^/10

discovery

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2712	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
2712	Au_.exe

Loads dropped DLL 4 IoCs

pid	Process
1924	uninst.exe
2712	Au_.exe
2712	Au_.exe
2712	Au_.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uninst.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Au_.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral17/files/0x0005000000019625-2.dat	nsis_installer_1
behavioral17/files/0x0005000000019625-2.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 2712	1924	uninst.exe	30
PID 1924 wrote to memory of 2712	1924	uninst.exe	30
PID 1924 wrote to memory of 2712	1924	uninst.exe	30
PID 1924 wrote to memory of 2712	1924	uninst.exe	30
PID 1924 wrote to memory of 2712	1924	uninst.exe	30
PID 1924 wrote to memory of 2712	1924	uninst.exe	30
PID 1924 wrote to memory of 2712	1924	uninst.exe	30

C:\Users\Admin\AppData\Local\Temp\uninst.exe
"C:\Users\Admin\AppData\Local\Temp\uninst.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

Filesize
36KB

MD5
8231603dfd27787e73e66b67423e1ef6

SHA1
3842160a4306510b4d07b13678f3362b89653265

SHA256
2f026b566effcd5074f91cd51a1afa16ffebeaf38a3fab5bdbbff7720ac8cf65

SHA512
f8a2588f4fb6dfd53e3f267558e4aec27e6f0d29f358341ed5b537909a97202671e2d32238500faabdc64323103c4b2810bb4104ca1efdfb868c77748d2dd0e2

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